For example:
I can hardly get by with my Russian. My level has gotten worse since I've stopped taking lessons.

Я не могу обойтись без своего русского. Мой уровень стал хуже, так как я прекратил брать уроки.

Ashley, Александр's translation is not correct because it means "I can't do without my English", whereas the initial sentence implies that the person lacks the Russian language knowledge.

Tatiana, you are right! It's my fault. Thank you.
I can hardly get by with my Russian. My level has gotten worse since I've stopped taking lessons. -- Я едва ли перебьюсь/ успешно решу свои проблемы/ с таким уровнем моего русского... (Хотя надежда остаётся!)

Errare humanum est. Главное, над этим работать. А Ваша, Александр, профессиякакое отношение имеет к английскому языку?

English is my hobby.
I''m a teacher too, but not an English teacher.
My career was rather various and interesting - nuclear physics - medicine - international trade - computer and information technologies, social sciences, surveys, researches - and teaching, teaching, teaching... - and learning in two postgraduate schools - then was my dissertation in information technology - then a training course in South Illinois University - conferences, articles, scientific reports, interdisciplinary investigations - then writing my doctorate work, which is, due to the permanent reforming of our educational system, not defended up to now.
I love English. Read English books, watch short TED-reports, use Lingualeo resources. Now I am lucky to be on Lingvolive. That's all in brief.

I see you're a knowledgable and worldy person. Forgive me my curiosity, I noticed as well you live about the same time zone as I do.

worldly